US8087948B2 - Waterproof structure for connector housing - Google Patents

Waterproof structure for connector housing Download PDF

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Publication number
US8087948B2
US8087948B2 US12/224,009 US22400907A US8087948B2 US 8087948 B2 US8087948 B2 US 8087948B2 US 22400907 A US22400907 A US 22400907A US 8087948 B2 US8087948 B2 US 8087948B2
Authority
US
United States
Prior art keywords
sealing member
waterproof sealing
connector housing
terminal
insertion opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/224,009
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English (en)
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US20100163303A1 (en
Inventor
Tsugio Ambo
Yoshikazu Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Furukawa Automotive Systems Inc
Original Assignee
Mitsubishi Cable Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Cable Industries Ltd filed Critical Mitsubishi Cable Industries Ltd
Assigned to MITSUBISHI CABLE INDUSTRIES, LTD. reassignment MITSUBISHI CABLE INDUSTRIES, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMBO, TSUGIO, TANAKA, YOSHIKAZU
Publication of US20100163303A1 publication Critical patent/US20100163303A1/en
Application granted granted Critical
Publication of US8087948B2 publication Critical patent/US8087948B2/en
Assigned to FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC. reassignment FURUKAWA ELECTRIC CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MITSUBISHI CABLE INDUSTRIES, LTD.
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet

Definitions

  • the present invention relates to a waterproof structure for connector housing of an extremely miniaturized electrical connector for use in wire harnesses of automobiles.
  • a connecting terminal 1 includes a connecting portion 2 provided at a front end and clamping portions 3 a and 3 b formed at a rear end.
  • a core conductor 5 of an electric wire 4 is connected to the connecting terminal at the clamping portion 3 a .
  • a waterproof sealing member 6 made of a synthetic rubber is provided on a sheath of the electric wire 4 and the sealing member 6 is fixed to the connecting terminal 1 by the clamping portion 3 b .
  • the sealing member 6 is to be brought into contact with an inner wall of a terminal insertion hole formed in a connector housing to prevent water from being introduced into the connector housing through the terminal insertion hole.
  • the connecting terminals could be packed within the connector housing only with a limited density.
  • the waterproof sealing members 6 In order to attain the waterproof function, the waterproof sealing members 6 have to be inserted into the terminal insertion hole. However, a width of the waterproof sealing member 6 is larger than a width of the connecting terminal 1 , and therefore a width of the terminal insertion hole has to be larger than a width of the connecting terminal 1 by a sum of widths of both sides of the waterproof sealing member 6 .
  • a sum of widths of both sides of the waterproof sealing member 6 amounts to at least about 0.5 mm.
  • the present invention has for its object to provide a waterproof structure for miniaturized connector housing in which terminal insertion holes can be formed side by side with a small pitch.
  • a waterproof structure for connector housing characterized in that a taper surface is formed on each of inner surfaces of terminal insertion openings formed at rear portions of terminal accommodating hole of the connector housing, that a taper surface corresponding to respective one of said taper surfaces formed on the inner surfaces of terminal insertion openings is formed on each of waterproof sealing members secured to rear portions of connecting terminals, and that said taper surfaces are urged against each other to seal said terminal insertion openings by said waterproof sealing members.
  • a part of a waterproof sealing member is placed outside a terminal accommodating hole to attain miniaturization, and may be advantageously applied to electric circuits for automobiles and motorbikes in which miniaturized electrical connectors are required.
  • FIG. 1 is a perspective view showing an embodiment of the waterproof structure for connector housing according to the invention
  • FIG. 2 is a longitudinal cross sectional top view
  • FIG. 3 is a longitudinal cross sectional side view
  • FIG. 4 is a longitudinal cross sectional view depicting a condition in which a rear holder is temporarily fixed to a connector housing;
  • FIG. 5 is a longitudinal cross sectional view illustrating a condition in which the rear holder is locked to the connector housing.
  • FIG. 6 is a perspective view showing a conventional connecting terminal with a waterproof sealing member.
  • FIG. 1 is a perspective view showing a condition in which a connecting terminal 12 is inserted into a terminal accommodating hole 11 of a connector housing 10
  • FIGS. 2 and 3 are longitudinal cross sectional top and side views, respectively.
  • each of the terminal accommodating holes 11 has a square cross section having width and height of 1.15 mm which is a minimum value for accommodating a connecting terminal 12 .
  • an opening 13 from which a cooperating connecting terminal is inserted.
  • a terminal insertion opening 14 having a step 15 and, furthermore, a tapersurface 16 is formed on each of four innersurfaces of, the terminal insertion opening 14 .
  • the rear holder 17 On right and left sides of the connector housing 10 , there are formed locking claws 18 a , 18 b for locking a rear holder 17 to be secured to a rear side of the connector housing 10 .
  • the rear holder 17 has formed therein two rectangular openings 19 through which electric wires are to be passed. As will be explained later, the rear holder 17 serves as a block member for pushing waterproof sealing members against the connector housing 10 .
  • the rear holder 17 has formed therein arms portions 20 each extending from side walls of the rear holder 17 . At front end portions of these arm portions 20 , there are formed locking holes 21 which are engaged with the locking claws 18 a , 18 b of the connector housing 10 .
  • the connector housing 10 may be advantageously made of a liquid crystal polymer having a fine molding property and a sufficient strength.
  • a connecting portion 12 a into which a cooperating connecting terminal is to be inserted.
  • a core conductor 22 a of an electric wire 22 is clamped to a middle clamp portion 12 b and the electric wire 22 is clamped to a rear clamp portion 12 c together with a front end portion 23 a of a waterproof sealing member 23 made of a resilient material such as a synthetic rubber, particularly silicone rubber.
  • the front end portion 23 a of the waterproof sealing member 23 is formed as a tubular member having a substantially elliptical cross sectional configuration. That is to say, a thickness of the front end portion 23 a measured in a vertical direction is larger than a thickness in a lateral direction.
  • the waterproof sealing member 23 is inserted into the terminal accommodating hole 11 with a sufficient margin.
  • a rear portion of the waterproof sealing member 23 is formed into a rectangular block member 25 and a step 24 is formed at a boundary between the front end portion 23 a and the block member 25 .
  • Front end portions of four surfaces of the block member 25 have formed therein taper surfaces 26 which meet the taper surfaces 16 formed at the terminal insertion opening 14 of the terminal accommodating hole 11 .
  • the rear holder 17 Upon inserting the connecting terminal 12 with the electric wire 22 and waterproof sealing member 23 into the connector housing 10 , at first as shown in FIG. 4 , the rear holder 17 is temporarily engaged with the connector housing 10 . That is to say, the rear holder 17 is pushed toward the connector housing 10 until the locking holes 21 of the lock arm portions 20 of the rear holder are engaged with the lock claws 18 a of the connector housing 10 to lock the rear holder 17 with respect to the connector housing 10 .
  • the connecting terminal 12 having the electric wire 22 secured thereto is inserted into the terminal accommodating hole 11 through the rectangular opening 19 of the rear holder 17 from the backside.
  • the waterproof sealing member 23 is also passed through the rectangular opening 19 while the resilient waterproof sealing member is deformed.
  • the connecting terminal 12 having the electric wire 22 and waterproof sealing member 23 secured thereto is inserted into the terminal accommodating hole 11 from the terminal insertion opening 14 .
  • the step 24 formed between the tubular front end portion 23 a and the block member 25 abuts against the step 15 of the terminal insertion opening 14 and an insertion depth of the connecting terminal 12 is limited.
  • the taper surfaces 26 of the block portion 25 are urged against the taper surfaces 16 of the terminal insertion opening 14 .
  • the rear holder 17 is further pushed to urge the waterproof sealing member 23 against the connector housing 10 , and the terminal insertion opening 14 of the terminal accommodating hole 11 of the connector housing 10 is filled with the waterproof sealing member 23 . In this manner, water could not be introduced into the terminal accommodating hole 11 from rear side.
  • the waterproof sealing member 23 is not fully inserted into the terminal accommodating hole 11 , but a part of the waterproof sealing member 23 is placed outside the connector housing 10 . Therefore, a vertical size and a horizontal size of the terminal accommodating hole 11 can be reduced to such values that the connecting terminal 12 can be inserted into the terminal accommodating hole 11 , while the effective waterproof structure can be attained. In this manner, the connector can be miniaturized.
  • terminal accommodating holes 11 there are formed two terminal accommodating holes 11 within the connector housing 10 , but the number of the terminal accommodating holes is not limited to two. The number of terminal accommodating holes 11 aligned in a row or column may be determined at will.
  • FIGS. 2-5 only one connecting terminal 12 is inserted into the connector housing 10 for the sake of explanation, but other connecting terminal 12 may be inserted into the other terminal accommodating hole 11 as well.
  • the terminal insertion opening 14 is formed to have a rectangular cross sectional shape, but may be formed to have a circular or elliptical cross sectional shape.
  • the waterproof sealing member 23 may be formed to have a corresponding cross sectional shape.
  • the connecting terminal 12 is of the female type, but according to the invention, a male type connecting terminal may be equally used.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
US12/224,009 2006-02-23 2007-02-22 Waterproof structure for connector housing Expired - Fee Related US8087948B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006046587 2006-02-23
JP2006-046587 2006-02-23
PCT/JP2007/053279 WO2007097394A1 (ja) 2006-02-23 2007-02-22 コネクタハウジングの防水構造

Publications (2)

Publication Number Publication Date
US20100163303A1 US20100163303A1 (en) 2010-07-01
US8087948B2 true US8087948B2 (en) 2012-01-03

Family

ID=38437430

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/224,009 Expired - Fee Related US8087948B2 (en) 2006-02-23 2007-02-22 Waterproof structure for connector housing

Country Status (6)

Country Link
US (1) US8087948B2 (ko)
EP (1) EP1988606A4 (ko)
JP (1) JPWO2007097394A1 (ko)
KR (1) KR101288689B1 (ko)
CN (1) CN101390260B (ko)
WO (1) WO2007097394A1 (ko)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140030905A1 (en) * 2012-07-27 2014-01-30 Amphenol Corporation High speed electrical contact assembly
US20150050826A1 (en) * 2012-05-16 2015-02-19 Yazaki Corporation Waterproof connector
US20190356075A1 (en) * 2018-05-18 2019-11-21 Yazaki North America, Inc. Electrical connector assembly with plug and cavity assembly and method of ultrasonically welding
USD913332S1 (en) 2018-11-02 2021-03-16 Nidec Motor Corporation Motor conduit plug
US11050321B2 (en) 2018-09-18 2021-06-29 Nidec Motor Corporation Motor conduit plug

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5651505B2 (ja) * 2011-03-10 2015-01-14 矢崎総業株式会社 電線引き出し部分の防水構造
CN102762064B (zh) * 2011-04-29 2016-08-17 博世汽车部件(苏州)有限公司 用于电动骑行车辆的电子控制单元
CN106229705A (zh) * 2016-09-12 2016-12-14 珠海凌达压缩机有限公司 一种调温设备、压缩机及接线护盖防水结构
CN106549259B (zh) * 2016-11-25 2018-12-14 徐州晶迪电子有限公司 一种线束及连接器部件
JP2019054642A (ja) * 2017-09-15 2019-04-04 本田技研工業株式会社 配電分岐ユニット及び車両
WO2020004685A1 (ko) * 2018-06-27 2020-01-02 엘지전자 주식회사 이동 단말기
TWI666831B (zh) * 2018-12-18 2019-07-21 胡連精密股份有限公司 電連接器的膠墊定位組件
KR102428132B1 (ko) * 2020-10-19 2022-08-03 한국단자공업 주식회사 조인트 터미널 및 이를 갖는 커넥터
KR102509730B1 (ko) * 2022-08-05 2023-03-14 주식회사 파브 리드선 홀더 일체형 솔레노이드 코일 제작방법

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713021A (en) * 1985-05-17 1987-12-15 Amp Incorporated Sealed electrical connector and method of using same
JPH04284381A (ja) 1991-03-12 1992-10-08 Fujikura Ltd 防水コネクタの端子二重係止構造
US5356312A (en) * 1991-12-09 1994-10-18 Yazaki Corporation Connector waterproofing stopper
US5618206A (en) * 1994-10-24 1997-04-08 Yazaki Corporation Waterproof connector having a connector housing with a plurality of terminal accommodation chambers and a seal hood
US5720629A (en) * 1996-10-16 1998-02-24 The Whitaker Corporation Sealed electrical connector
US5879179A (en) * 1996-04-26 1999-03-09 Yazaki Corporation Waterproof connector
JPH11283693A (ja) 1998-03-31 1999-10-15 Yazaki Corp 防水コネクタ
US6152752A (en) * 1998-10-20 2000-11-28 Yazaki Corporation Waterproof connector and method for assembling same
JP2003031294A (ja) 2001-07-12 2003-01-31 Ryosei Electro-Circuit Systems Ltd 防水コネクタ
JP2003031293A (ja) 2001-07-12 2003-01-31 Ryosei Electro-Circuit Systems Ltd 防水コネクタ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598295Y2 (ja) * 1980-10-14 1984-03-14 古河電気工業株式会社 防水コネクタ
JPH0330269A (ja) * 1989-06-27 1991-02-08 Nissan Motor Co Ltd ワイヤシールラバーの固定構造
JPH0499370U (ko) * 1991-01-17 1992-08-27
JPH0529052A (ja) * 1991-05-22 1993-02-05 Ngk Spark Plug Co Ltd 防水コネクタの製造方法
US5607318A (en) * 1993-11-05 1997-03-04 Sumitomo Wiring Systems, Ltd. Waterproof connector
DE69522488T2 (de) * 1994-04-13 2002-05-16 Sumitomo Wiring Systems, Ltd. Abdichtungsvorrichtung und Herstellverfahren eines wasserdichten Stecker
JP2005071664A (ja) * 2003-08-20 2005-03-17 Sumitomo Wiring Syst Ltd 端子金具

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713021A (en) * 1985-05-17 1987-12-15 Amp Incorporated Sealed electrical connector and method of using same
JPH04284381A (ja) 1991-03-12 1992-10-08 Fujikura Ltd 防水コネクタの端子二重係止構造
US5356312A (en) * 1991-12-09 1994-10-18 Yazaki Corporation Connector waterproofing stopper
US5618206A (en) * 1994-10-24 1997-04-08 Yazaki Corporation Waterproof connector having a connector housing with a plurality of terminal accommodation chambers and a seal hood
US5879179A (en) * 1996-04-26 1999-03-09 Yazaki Corporation Waterproof connector
US5720629A (en) * 1996-10-16 1998-02-24 The Whitaker Corporation Sealed electrical connector
JPH11283693A (ja) 1998-03-31 1999-10-15 Yazaki Corp 防水コネクタ
US6494740B1 (en) 1998-03-31 2002-12-17 Yazaki Corporation Waterproof connector and fabrication method thereof
US6152752A (en) * 1998-10-20 2000-11-28 Yazaki Corporation Waterproof connector and method for assembling same
JP2003031294A (ja) 2001-07-12 2003-01-31 Ryosei Electro-Circuit Systems Ltd 防水コネクタ
JP2003031293A (ja) 2001-07-12 2003-01-31 Ryosei Electro-Circuit Systems Ltd 防水コネクタ

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150050826A1 (en) * 2012-05-16 2015-02-19 Yazaki Corporation Waterproof connector
US9293878B2 (en) * 2012-05-16 2016-03-22 Yazaki Corporation Waterproof connector comprising a rear holder with engaging portions
US20140030905A1 (en) * 2012-07-27 2014-01-30 Amphenol Corporation High speed electrical contact assembly
US9070998B2 (en) * 2012-07-27 2015-06-30 Amphenol Corporation High speed electrical contact assembly
US20190356075A1 (en) * 2018-05-18 2019-11-21 Yazaki North America, Inc. Electrical connector assembly with plug and cavity assembly and method of ultrasonically welding
US11283211B2 (en) * 2018-05-18 2022-03-22 Yazaki North America, Inc. Electrical connector assembly with plug and cavity assembly and method of ultrasonically welding
US11962107B2 (en) 2018-05-18 2024-04-16 Yazaki North America, Inc. Electrical connector assembly with plug and cavity assembly and method of ultrasonically welding
US11050321B2 (en) 2018-09-18 2021-06-29 Nidec Motor Corporation Motor conduit plug
USD913332S1 (en) 2018-11-02 2021-03-16 Nidec Motor Corporation Motor conduit plug

Also Published As

Publication number Publication date
EP1988606A1 (en) 2008-11-05
CN101390260A (zh) 2009-03-18
KR101288689B1 (ko) 2013-07-22
KR20080096754A (ko) 2008-11-03
CN101390260B (zh) 2011-08-17
EP1988606A4 (en) 2012-01-04
JPWO2007097394A1 (ja) 2009-07-16
US20100163303A1 (en) 2010-07-01
WO2007097394A1 (ja) 2007-08-30

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